VALVE CLEARANCE ADJUSTMENT
| CAUTION | Always rotate engine in direction of normal rotation (counterclockwise as viewed from front of engine). Reverse rotation may cause timing belt to jump time. |
| CAUTION | Rocker arms are made of aluminum and can be damaged if lock nuts are overtightened. |
Note. Valves should only be adjusted when engine is cold with temperature less than 100°F (38°C). After adjusting valves, retighten crankshaft pulley bolt to specification. See TORQUE SPECIFICATIONS .
- Remove valve cover. Remove upper timing belt cover. Rotate crankshaft counterclockwise until No. 1 piston is at TDC of compression stroke. UP mark on camshaft pulley should on top, TDC marks should align with cylinder head upper surface or TDC groove should align with pointer on back cover. (Scheme 1)
- Loosen adjusting screw lock nut on cylinder No. 1. Adjust valve clearance to specification on all valves for No. 1 cylinder. Turn adjustment screw until a feeler gauge slides back and forth with a slight drag. See «VALVE CLEARANCE SPECIFICATIONS»(ref-49289-S14179380362001011500000). Tighten lock nut to specification and recheck valve adjustment. See «TORQUE SPECIFICATIONS»(ref-49289-S30249502912001011500000).
- Rotate crankshaft counterclockwise 180 degrees (camshaft pulley rotates 90 degrees). UP mark on camshaft pulley should be on exhaust side. Adjust all valves for No. 3 cylinder to specification. Tighten lock nut to specification and recheck valve adjustment. See «TORQUE SPECIFICATIONS»(ref-49289-S30249502912001011500000).
- Rotate crankshaft counterclockwise 180 degrees (camshaft pulley rotates 90 degrees). UP mark on camshaft pulley should be down (both TDC grooves will be visible again). Adjust all valves for No. 4 cylinder to specification. Tighten lock nut to specification and recheck valve adjustment.
- Rotate crankshaft counterclockwise 180 degrees (camshaft pulley rotates 90 degrees). UP mark on camshaft pulley should be on intake side. Adjust all valves for No. 2 cylinder to specification. Tighten lock nut to specification and recheck valve adjustment.
- Ensure crankshaft pulley bolt is tightened to specification after adjustment procedure. See «TORQUE SPECIFICATIONS»(ref-49289-S30249502912001011500000). Apply liquid gasket within 5 minutes of installing valve cover, to 4 corners of valve cover camshaft recesses. Install valve cover. Tighten nuts to specification.
| Application | In. (mm) |
|---|---|
| Intake | 0.007-0.009 (0.18-0.23) |
| Exhaust | 0.009-0.011 (0.23-0.28) |
VALVE CLEARANCE SPECIFICATIONS
Scheme 1
TIMING BELT ADJUSTMENT
| CAUTION | Always rotate engine in direction of normal rotation (counterclockwise as viewed from front of engine). Reverse rotation may cause timing belt to jump time. |
Note. Timing belt should be adjusted when engine is cold with temperature less than 100°F (38°C).
Note. Timing belt tensioner is spring-loaded to apply proper tension to belt after adjustment.
- Remove valve cover. Remove upper timing belt cover. See «TIMING BELT R & I»(ref-49289-S01138153092001011500000) under REMOVAL & INSTALLATION. Inspect timing belt for cracks and oil or coolant soaking. Inspect trailing edge of timing belt teeth for damage. Replace timing belt as necessary. Rotate crankshaft counterclockwise until No. 1 cylinder is at TDC of compression stroke. (Scheme 1) Loosen timing belt adjuster bolt 180 degrees. (Scheme 2)
- Rotate crankshaft 3 teeth counterclockwise on camshaft pulley to create tension on timing belt. Tighten adjuster bolt to specification. Ensure crankshaft pulley bolt is tightened to specification. See «TORQUE SPECIFICATIONS»(ref-49289-S30249502912001011500000). Apply liquid gasket, within 5 minutes of installing valve cover, to 4 corners of valve cover camshaft recesses. Install valve cover.
